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Finding the Fourth Proportional to 203,303.34, 280,535.58 and 112,636.50

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Solution

The fourth proportional to 203,303.34, 280,535.58 and 112,636.50 is: 155,425.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,303.34 : 280,535.58 = 112,636.50 : x
  2. Step 2: Convert to fraction form
    203,303.34/280,535.58 = 112,636.50/x
  3. Step 3: Cross multiply
    203,303.34x = 280,535.58 × 112,636.50
  4. Step 4: Simplify right side
    203,303.34x = 31,598,545,856.67
  5. Step 5: Solve for x
    x = 31,598,545,856.67/203,303.34
  6. Step 6: Final answer
    x = 155,425.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.